DFDS has made passenger sailings available on Rosslare - Dunkirk until the end of the year. They are also now taking passenger on VISBORG.
Booking info here @A83 https://www.dfds.com/en/passenger-ferries/ferry-crossings/rosslare-dunkirk
Booking info here @A83 https://www.dfds.com/en/passenger-ferries/ferry-crossings/rosslare-dunkirk